HDMI audio problem when connecting LCD TV to PC via HDMI

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  1. Posts : 55
    windows 7 professional 64 bits
       #1

    HDMI audio problem when connecting LCD TV to PC via HDMI


    hi all,

    I have my media center PC connected to a Sansung LCD TV through an HDMI cable.
    Everything works fine; the PC detects TV and both audio and video travel through the HDMI cable from PC to TV

    The problem happens when I turn the TV OFF and ON. In this case, the video is back but not the audio. This can be seen in the "playback audio devices" in "control panel", the icon that represennts the sansung speakers via HDMI dissapears.
    Any idea of what to do? I got the latest video driver, which also deals with HDMI audio but no luck at all...

    thanks
      My Computer


  2. Posts : 6,879
    Win 7 Ultimate x64
       #2

    This is more of a HDMI handshaking issue than a Windows or driver issue, and a very common occurrence. Sadly if you do a Google search using "hdmi handshake no audio" for the search terms, you'll get lots of results but very little in the way of how to solve. About the best solution I came across is this one,

    *Official* Asus Xonar HDAV1.3 thread - Page 271 - AVS Forum

    A lot of that thread deals with the Asus Xonar sound cards, but there is also quite a bit about the no audio in general.
      My Computer


  3. Posts : 908
    Windows 7 Home Premium
       #3

    Is HDMI Audio listed separately in Device Manager?

    If it is, perhaps disabling and re-enabling would force a re-connect.

    If it's supposed to be showing up in DM but isn't, might "Scan For Hardware Changes" force a re-connect.

    Ap
      My Computer


  4. Posts : 55
    windows 7 professional 64 bits
    Thread Starter
       #4

    Yes, HDMI audio listed separately in dev manager. It is always present in the DM regardless of whether the HJDMI audio is gone or not.

    This problem is quite painful because each time I turned off the TV I have to restart the PC in order to get audio through HDMI in the TV. The off state of my media center PC is sleep mode, but waking up from this mode does not awake HDMI audio...

    stormy13, you are right, I shy google search shows how annoyingly common the HDMIU handshaking problem is
      My Computer


  5. Posts : 908
    Windows 7 Home Premium
       #5

    pjuegos said:
    Yes, HDMI audio listed separately in dev manager. It is always present in the DM regardless of whether the HJDMI audio is gone or not.

    This problem is quite painful because each time I turned off the TV I have to restart the PC in order to get audio through HDMI in the TV. The off state of my media center PC is sleep mode, but waking up from this mode does not awake HDMI audio...

    stormy13, you are right, I shy google search shows how annoyingly common the HDMIU handshaking problem is

    Even though it's probably been tried before, disable HDMI in device manager, then re-enable, (with the TV on) that works for clearing up some audio problems.

    Ap
      My Computer


  6. Posts : 55
    windows 7 professional 64 bits
    Thread Starter
       #6

    I tried that Aphelion, and I got a blue screen crash . I tried it again and the same thing happened.
    Something is going really wrong with the HDMI audio

    cheers
      My Computer


  7. Posts : 908
    Windows 7 Home Premium
       #7

    pjuegos said:
    I tried that Aphelion, and I got a blue screen crash . I tried it again and the same thing happened.
    Something is going really wrong with the HDMI audio

    cheers

    Yikes! I didn't expect that, sorry about that. What a shame, having to reboot.

    Ap
      My Computer


  8. Posts : 55
    windows 7 professional 64 bits
    Thread Starter
       #8

    no, it was actually a good thing to try.
    Now we can confirm that audio HDMI is just not stable at all in my PC, and apparently in many other PCs also

    It was a good idea
      My Computer


  9. Posts : 1,035
    Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10
       #9

    I was wondering if you are using your HDMI for both audio and video?
    I have an appointment I must get to but will look for your reply upon my return, I may have some information for you. Regards.....
      My Computer


  10. Posts : 55
    windows 7 professional 64 bits
    Thread Starter
       #10

    Thanks fishnbanjo,

    Yes, I use it for both and that is the problem.
    When I start the PC with LCD TV connected via HDMI, both audio and video work great.
    Whenever I turn OFF an ON the TV, the audio is gone but the video stays

    cheers
      My Computer


 
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